Answer:
C10H200
Explanation:
The molecular formula C10H20O (molar mass : 156.27 g/mol) may refer to: Citronellol. Decanal.
The molar mass of menthol ([tex]\rm C_10H_{20}O[/tex]) is 156.3 g/mol.
To calculate the molar mass of menthol ([tex]\rm C_10H_{20}O[/tex]), we need to determine the sum of the atomic masses of all the individual atoms in the compound.
The atomic masses of the elements are as follows:
C (carbon) = 12.01 g/mol
H (hydrogen) = 1.01 g/mol
O (oxygen) = 16.00 g/mol
Now, let's calculate the molar mass of menthol:
Molar mass of menthol = (10 * molar mass of C) + (20 * molar mass of H) + (1 * molar mass of O)
= (10 * 12.01 g/mol) + (20 * 1.01 g/mol) + (1 * 16.00 g/mol)
= 120.1 g/mol + 20.2 g/mol + 16.0 g/mol
= 156.3 g/mol
Therefore, the molar mass of menthol ([tex]\rm C_10H_{20}O[/tex]) is 156.3 g/mol.
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If the specific heat of water is 4.184 J/g∙°C, how much heat is required to increase the temperature of 1.500g of water from 23 °C to 39 °C? (show your work) Units count
Answer:
Q = 100.42 J
Explanation:
Given data:
Mass of water = 1.500 g
Specific heat capacity of water = 4.184 J/g.°C
Heat required = ?
Initial temperature = 23°C
Final temperature = 39°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 39°C - 23°C
ΔT = 16°C
Q = 1.500 g× 4.184 J/g.°C ×16°C
Q = 100.42 J
A piece of silver wire has a mass of 53.91 grams. How many moles of
silver are in the wire?
89 year old toys girl who have some starter pets plez im new
What purpose is served by
including information about Aristotle
and the experiments of the ancient
Greeks?
Aristotle laid the philosophical groundwork for all subsequent discussions of elements, pure substances, and chemical combinations.
The nature of substances and their transformations were the main topics of Aristotle's theories, just like in contemporary chemistry. In On Generation and Corruption (De Generatione et Corruptione), Meteorology, and portions of Physics and On the Heavens, he provided the first systematic treatments of chemical theory (De Caelo).
Although he believed that some of them might be made of a single, pure component, Aristotle realized that the majority of common, tangible things are composed of several different substances. In order to identify a single substance, he needed to provide a purity standard. His standard was the homoeomerism of pure substances, which means that they are made up of similar components at all levels.
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Water changes its state of matter when heat is added or taken away. When water evaporates, the particles in the water vapor
As that liquid water is further heated, it evaporates and becomes a gas—water vapor.
What is evaporation?When a liquid transitions from the liquid phase to the gas phase, evaporation, a sort of vaporization, takes place on the liquid's surface. High concentrations of the evaporating substance in the surrounding gas considerably slow down evaporation, as is the case when humidity impacts the rate of water evaporation.
The way that the liquid's molecules clash determines how much energy is transferred to one another. In order to leave and enter the surrounding air as a gas, a molecule close to the surface must absorb enough energy to outperform the vapor pressure. Evaporative cooling is the process of reducing a liquid's temperature as a result of evaporation, which removes energy from the evaporated liquid.
The majority of the liquid's molecules only hold a small portion of the heat energy needed.
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7. If a person wanted to become a physicist, besides physics what other courses of study would be essential areas of study? O medicine, biotechnology, genetics, and pharmacology O mathematics, statistics, logic, and computer science O chemistry, physics, astronomy, and earth science biology, paleontology, biochemistry, and zoology
Answer:
paleontologist is the best i can say you
Which of the following is the last part of the technological design process
Answer:
Communicate the final solution
This concludes the Technological Design Process.
Is my answer correct?
Can someone explain how to get the right net ionic equation
Answer:
Option D.
2Ag⁺(aq) + Ni(s) —> 2Ag(s) + Ni²⁺(aq)
Explanation:
From the question given above:
Ni(s) —> Ni²⁺(aq) + 2e¯
Ag⁺(aq) + e¯ —> Ag(s)
We can obtain the net ionic equation by combining both equation as shown below:
Ag⁺(aq) + e¯ + Ni(s) —> Ag(s) + Ni²⁺(aq) + 2e¯
Next, we shall balance the equation. This can be obtained as follow:
Ag⁺(aq) + e¯ + Ni(s) —> Ag(s) + Ni²⁺(aq) + 2e¯
There are 2 atoms of e¯ on the right side and 1 atom on the left side. It can be balance by putting 2 in front of e¯ as shown below:
Ag⁺(aq) + 2e¯ + Ni(s) —> Ag(s) + Ni²⁺(aq) + 2e¯
Next, we shall balance the charge on both sides. This is illustrated below:
TOTAL charge on the left = +1 + (–2)
= 1 – 2
= –1
TOTAL charge on the right side = +2 + (–2)
= 2 – 2
= 0
Thus, to balance the charge, put 2 in front of Ag⁺ as shown below:
2Ag⁺(aq) + 2e¯ + Ni(s) —> Ag(s) + Ni²⁺(aq) + 2e¯
There are 2 atoms of Ag on the left side and 1 atom on the right side. It can be balance by putting 2 in front of Ag as shown below:
2Ag⁺(aq) + 2e¯ + Ni(s) —> 2Ag(s) + Ni²⁺(aq) + 2e¯
Next, cancel out 2e¯ from both side to obtain the net ionic equation. Thus, we have:
2Ag⁺(aq) + Ni(s) —> 2Ag(s) + Ni²⁺(aq)
What is the result of an unstable isotope that give off gamma radiation?
Answer:
When unisotope releases gamma radiation, it does not change the atomic number of the atom .
Explanati
. This is because gamma radiation is the emission of electromagnetic energy from the nucleus in the form of photons, discrete packets of energy.
Glucose C6H12O6 is formed in plants during photosynthesis. The molar mass of glucose is:
Answer:
170
Explanation:
C=6×12=72
H=12×1 = 12
O=6×16=96
Molar mass=72+12+96
Molar mass=170
Answer:
180
Explanation:
C = 12
H = 1
O = 16
The molar mass of the glucose is
⇒ 12 x 6 + 1 x 12 + 16 x 6
⇒ 72 + 12 + 96
= 180
1. Calculate the amount of heat, in kJ, that is transferred to 45.7 mL of water when its temperature changes from 23.6 °C to 41.3 °C. The density of water is 1.00 g/mL and the specific heat of water is 4.184 J/(g•°C).
2. Should the sign of the heat transferred in the question above be positive or negative?
Answer:
from
H=mc∆T
where by;
H is amount of heat.
m is mass of water.
c is specific heat of water.
∆T is change in temperature.
m=density ×volume
m=1.00g/ml×45.7ml
m=45.7g
∆T=Tt-T°
∆T=41.3°C-23.6°C
∆T=17.7°C
H=45.7g×4.184j(g•°C)×17.7°C
H=3,384.396J
H=3,384.396÷1000
H=3.384kJ
Explanation:
H=mc∆T
where by;
H is amount of heat.
m is mass of water.
c is specific heat of water.
∆T is change in temperature
1. A football player throws a football 30 meters/second2 using 600 Newtons of force What
was the mass of the football?
Answer:
20 kgExplanation:
The mass of the football can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{600}{30} = \frac{60}{3} \\ [/tex]
We have the final answer as
20 kgHope this helps you
science!
What type of heat transfer takes place when a furnace heats up an entire room?
Radiation, because the element of the heater comes in contact with air in the room
Convection, because energy is carried by waves and not matter
Radiation, because heat travels in a cyclical manner
Convection, because air currents are formed
Answer:
Radiation, because the element of the heater comes in contact with air in the room. Convection, because energy is carried by waves and not matter. Radiation, because heat travels in a cyclical manner.
Explanation:
Answer:
Radiation,
Explanation:
The teal line of the hydrogen emission spectrum has a wavelength of 486.0 nm.486.0 nm. Calculate the energy of one photon of this light.
Answer:
4.086 × 10⁻¹⁹ J
Explanation:
Step 1: Given and required data
Wavelength of the teal line of the hydrogen emission spectrum (λ): 486.0 nmSpeed of light (c): 2.997 × 10⁸ m/sPlanck's constant (h): 6.626 × 10⁻³⁴ J.sStep 2: Convert "λ" to meters
We will use the conversion factor 1 m = 10⁹ nm.
486.0 nm × 1 m/10⁹ nm = 4.860 × 10⁻⁷ m
Step 3: Calculate the energy of one photon of this light
We will use the Planck-Einstein's relation.
E = h × c / λ
E = 6.626 × 10⁻³⁴ J.s × 2.997 × 10⁸ m/s / 4.860 × 10⁻⁷ m
E = 4.086 × 10⁻¹⁹ J
Next the strontium hydroxide solution prepared in part (a) is used to titrate a nitric acid solution of unknown concentration.Write a balanced chemical equation to represent the reaction between strontium hydroxide and nitric acid solutions.
Answer:
Sr(OH)₂(aq) + 2 HNO₃(aq) ⇒ Sr(NO₃)₂(aq) + 2 H₂O(l)
Explanation:
Let's consider the unbalanced molecular equation between strontium hydroxide and nitric acid solutions. This is a neutralization reaction, since an acid reacts with a base to form a salt and water.
Sr(OH)₂(aq) + HNO₃(aq) ⇒ Sr(NO₃)₂(aq) + H₂O(l)
We have 2 N atoms on the right side, so we have to multiply HNO₃ by 2.
Sr(OH)₂(aq) + 2 HNO₃(aq) ⇒ Sr(NO₃)₂(aq) + H₂O(l)
Finally, to get the balanced equation we will multiply H₂O by 2.
Sr(OH)₂(aq) + 2 HNO₃(aq) ⇒ Sr(NO₃)₂(aq) + 2 H₂O(l)
The balanced chemical equation can be given as:
[tex]\rm \bold{Sr(OH)_2\;+\;2\;HNO_3\;\rightarrow\;Sr(NO_3)_2\;+\;2\;H_2O}[/tex]
The reaction between strontium hydroxide and nitric acid has been the neutralization reaction. The reaction results in the formation of the salt along with the water molecules.
The reaction can be given as:
[tex]\rm Sr(OH)_2\;+\;HNO_3\;\rightarrow\;Sr(NO_3)_2\;+\;H_2O[/tex]
The balanced chemical equation has been the one in which the number of atoms of each element has been equal on both the product and the reactant side.
The balanced chemical equation can be given as:
[tex]\rm Sr(OH)_2\;+\;2\;HNO_3\;\rightarrow\;Sr(NO_3)_2\;+\;2\;H_2O[/tex]
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The average atomic mass of the imaginary element : 47.255 amu
Further explanationThe elements in nature have several types of isotopes
Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is the average atomic mass of all its isotopes
Mass atom X = mass isotope 1 . % + mass isotope 2.% ..
isotope E-47 47.011 amu, 87.34%
isotope E-48 48.008 amu, 6.895
isotope E-49 50.009 amu, 5.77%
The average atomic mass :
[tex]\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu[/tex]
1)What is the current in a 160V circuit if the resistance is 5Ω?
Answer:
Current 32 A
Explanation:
Use this formula
I=V/R
V = Voltage (volts)
R = resistance (ohms)
160/5=32
Hope this helps
hurry plaese big points brainliest
Answer:
No because a straw is plastic look at it by this was, the energy used to create one metal straw is roughly equivalent to creating 90 plastic straws, and also produces carbon emissions equivalent to 150 plastic straws. This may not seem like a lot, but in order to offset the environmental impact of creating a metal straw, it must be used over 150 times
Explanation:
The atomic mass of an element is:
A. The number of protons and electrons
B. The number of protons and neutrons
Explanation:
it b
....
hope it helps!
Dianabol is one of the anabolic steroids composed of only C, H, and O that has been used by some
athletes to increase the size and strength of their muscles. A 14.765 g sample of Dianabol is burned,
and 43.257 g CO₂ and 12.395 g H₂O are formed. In a second experiment, the molecular mass of
Dianabol is found to be 300.44 g/mol. What is the molecular formula for Dianabol?
The Molecular formula of the compound is C₂₀H₂₈O₂
What is the Molecular formula of the compound?The Molecular formula is determined as follows from the equation of the reaction as follows:
Molecular formula = (empirical formula)ₙCxHyOz + O₂ → x CO₂ + y/z H₂O
mass of CO₂ produced = 43.257 g
moles of C in the sample = 43.257/44 = 0.983 moles
mass of C in the sample = 0.983 * 12 = 11.796
mass of H₂O produced = 12.395 g
moles of H in the sample = 12.395/18 * 2 = 1.377 moles
mass of H in sample = 1.377 g
mass of oxygen in the sample = 14.765 g - (11.796 g + 1.377 g)
mass of oxygen in the sample = 1.598
moles of oxygen = 1.598/16 = 0.0999 moles
Ratio of C : H : O = 0.983 : 1.377 : 0.0999
Ratio of C : H : O = 10 : 14 : 1
Empirical formula of compound = C₁₀H₁₄O
Empirical mass = 150 g
Molecular mass = empirical mass * n
n = molecular mass/empirical mass
n = 300.44/150
n = 2
From the formula;
Molecular formula = (empirical formula)ₙ
Molecular formula = (C₁₀H₁₄O)₂
Molecular formula =C₂₀H₂₈O₂
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4 Nitrogen monoxide reacts with oxygen like this:
2NO(gas) + O2(gas) -> 2NO2 (gas)
a. How many moles of oxygen molecules react
with I mole of nitrogen monoxide molecules?
b. What volume of oxygen will react with
50 cm of nitrogen monoxide?
c. Using the volumes in b, what is:
i. the total volume of the two reactants?
ii. the volume of nitrogen dioxide formed?
a. mol O₂=0.5
b. volume O₂ = 25 cm³
c. i. the total volume of the two reactants = 75 cm³
c. ii. the volume of nitrogen dioxide formed = 50 cm³
Further explanationReaction
2NO(gas) + O₂(gas) ⇒ 2NO₂ (gas)
a.
mol NO = 1
From the equation, mol ratio NO : O₂ = 2 : 1, so mol O₂ :
[tex]\tt \dfrac{1}{2}\times 1=0.5[/tex]
b.
From Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles
Because mol ratio NO : O₂ = 2 : 1, so volume O₂ :
[tex]\tt \dfrac{1}{2}\times 50~cm^3=25~cm^3[/tex]
c.
i. total volume of reactants : 25 cm³+ 50 cm³=75 cm³
ii. the volume of nitrogen dioxide formed :
mol ratio NO : NO₂ = 2 : 2, so volume NO₂ = volume NO = 50 cm³
What volume of 0.26 M H2SO4 can be prepared by diluting 125 mL of 5.1 M H2SO4?
______L
Answer:
2451.9 ml
Explanation:
M1V1 = M2 V2
M1 = 5.1M
V1 = 125ml
M2=0.26M
V2= ?
V2= M1 V1/M2
V2 = 5.1*125/0.26
V2 = 2451.9 ml
What is the molarity when 0.181 moles of MgNO3)2 are dissolved in enough water to make 0.750 L solution?
Answer:
Molarity = 0.24 M
Explanation:
Given data:
Number of moles of Mg(NO₃)₂ = 0.181 mol
Volume of solution = 0.750 L
Molarity of solution = ?
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
by putting values,
Molarity = 0.181 mol / 0.750 L
Molarity = 0.24 M
8.67 x 1018 atoms Zn
calculate the number of representative particles or moles for each of the following
Multiply the no. of moles with Avogadro's constant which is 6.02*10^23
the mole ratio of Zinc * Avogadro's constant *8.67*1018
this should help you get what you want
Help me pls Do In A HOUR 8th grade science,
Some street lights use incandescent bulbs, and others use LEDS. Which would you recommend and why?
Answer:
I would reccomend LED's because they use much less energy than incandescent bulbs
What volume (in mL) of 0.51 M H2SO4(aq) solution is necessary to completely react with 103 mL of 0.36 M KOH(aq)
Answer: 36.3 ml
Explanation:
According to the neutralization law,
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1[/tex] = basicity [tex]H_2SO_4[/tex] = 2
[tex]M_1[/tex] = molarity of [tex]H_2SO_4[/tex] solution = 0.51 M
[tex]V_1[/tex] = volume of [tex]H_2SO_4[/tex] solution = ?
[tex]n_2[/tex] = acidity of [tex]KOH[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]KOH[/tex] solution = 0.36 M
[tex]V_1[/tex] = volume of [tex]KOH[/tex] solution = 103 ml
Putting in the values we get:
[tex]2\times 0.51\times V_1=1\times 0.36\times 103[/tex]
[tex]V_1=36.3ml[/tex]
Therefore, volume of [tex]H_2SO_4[/tex] required is 36.3 ml
Metallic tantalum crystallizes in a body-centered cubic lattice, with one Ta atom per lattice point. If the edge length of the unit cell is found to be 328 pm, what is the metallic radius of Ta in pm
Answer:
The radius of the atom Ta is 142pm
Explanation:
To solve this question we need to know that for a body-centered cubic lattice we have the equations:
X = 4/√3 R
Where X is edge length and R is radius of the atom in the lattice.
If adge length of unit cell is 328 pm:
328pm = 4/√3 R
328pm * √3 / 4 = R
142pm = R
The radius of the atom Ta is 142pm
If 100. mL of 0.100 M K2SO4 is added to 200. mL of 0.150 M KCl, what is the concentration of K + ions in the final solution? Assume that the volumes are additive.
The final concentration will be "0.167 M".
According to the question,
Moles of KCl,
[tex]0.15\times 200\times 10^{-3}[/tex]Moles of K₂SO₄,
[tex]0.1\times 100\times 10^{-3}[/tex]Total moles of K+ will be:
= [tex]0.15\times 200\times 10^{-3}+2\times 0.1\times 100\times 10^{-3}[/tex]
Total volume will be:
= [tex](100+200) \ mL[/tex]
hence,
→ The final concentration of K+ will be:
= [tex]\frac{Total \ moles}{Total \ volume}[/tex]
= [tex]\frac{0.05}{300}\times 100[/tex]
= [tex]\frac{0.5}{3}[/tex]
= [tex]0.167 \ M[/tex]
Thus the above solution is correct.
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Conversions
If you traded (converted)
15 Skittles for M&Ms,
how many M&Ms do you
have?
Conversion Factor
6 Skittles 4 Cookies
1 Cookies = 2 M&Ms
If you traded (converted) 15 Skittles for M&Ms, you will have 20 M&Ms
How to convert 15 Skittles to cookiesWe'll begin by converting 15 Skittles to cookies. This can be obtained as follow:
6 Skittles = 4 Cookies
Therefore,
15 Skittles = (15 Skittles × 4 cookies) / 6 skittles
15 Skittles = 10 cookies
How to convert 10 cookies to M&MsWe can convert 10 cookies to M&Ms as follow:
1 Cookies = 2 M&Ms
Therefore,
10 cookies = (10 cookies × 2 M&Ms) / 1 Cookies
10 cookies = 20 M&Ms
Thus, 15 Skittles is equivalent to 20 M&Ms
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A 2.89 g sample of a metal chloride, MCl2, is dissolved in water and treated with excess aqueous silver nitrate. The silver chloride that formed weighed 6.41 g. Calculate the molar mass of M. Question 3 options: 70.9 g/mol 29 g/mol 58.0 g/mol 65 g/mol 72.4 g/mol
Answer:
58.0 g/mol
Explanation:
The reaction that takes place is:
MCl₂ + 2AgNO₃ → 2AgCl + M(NO₃)₂First we calculate how many moles of silver chloride were produced, using its molar mass:
6.41 g AgCl ÷ 143.32 g/mol = 0.0447 mol AgClThen we convert AgCl moles into MCl₂ moles, using the stoichiometric ratio:
0.0447 mol AgCl * [tex]\frac{1molMCl_2}{2molAgCl}[/tex] = 0.0224 mol MCl₂Now we calculate the molar mass of MCl₂, using the original mass of the sample:
2.86 g / 0.0224 mol = 127.68 g/molWe can write the molar mass of MCl₂ as:
Molar Mass MCl₂ = Molar Mass of M + (Molar Mass of Cl)*2127.68 g/mol = Molar Mass of M + (35.45 g/mol)*2Finally we calculate the molar mass of M:
Molar Mass of M = 57 g/molThe closest option is 58.0 g/mol.
5. Using one of those fancy capipers I demonstrated in class, I measure the sides of a cube as 6.8 cm, by 6.83 cm, by 9.37 cm. The formula for volume is: V = length X width x height. Using significant digits, what is the best answer you can come up for the volume of the cube?
Answer:
[tex]435.18\ cm^3[/tex]
Explanation:
[tex]From\ the\ measurements\ by\ the\ caliper,\\The\ length\ of\ the\ cube=6.8\ cm\\The\ breadth\ of\ the\ cube=6.83\ cm\\The\ height\ of\ the\ cube=9.37\ cm\\Hence,\\As\ we\ know\ that\ Volume\ of\ the\ cuboid=lbh\\Hence,\\Volume\ of\ the\ cube=6.8*6.83*9.37\\Volume\ of\ the\ cube=435.18\ cm^3\\[/tex]